I don't do link building either (requests, reciprocal, etc.). I tried years ago but gave up because it's a lot of work for so little return. I got a few links but they sent such little traffic that it wasn't worth it. I've got enough other stuff to worry about that is under my control.
I don't care one bit about PageRank either, it's utterly meaningless, I'd bet 99.9% of my visitors don't even know what that is.